ISO-14776-112-2002.pdf
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1、INTERNATIONAL STANDARD ISO/IEC 14776-112 First edition 2002-05 Information technology Small computer system interface (SCSI) Part 112: Parallel Interface-2 (SPI-2) Reference number ISO/IEC 14776-112:2002(E) Copyright International Organization for Standardization Provided by IHS under license with I
2、SO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/02/2007 23:27:23 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, Use
3、r=Wing, Bernie Not for Resale, 04/02/2007 23:27:23 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO/IEC 14776-112 First edition 2002-05 Information technology Small computer system interface (SCSI) Part 112: Parallel Interface-2 (SPI-2) ISO/IEC 200
4、2 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. ISO/IEC Copyright Office Case postale 56 CH-1211
5、 Genve 20 Switzerland XE For price, see current catalogue PRICE CODE Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/02/2007 23:27:23 MDTNo reproduction or networking permitted wit
6、hout license from IHS -,-,- 14776-112 ISO/IEC:2002(E) ii SCSI Parallel Interface-2 Contents Page Introduction xiv 1 Scope .1 2 Normative references .2 2.1 Normative references 2 2.2 Approved references .2 2.3 References under development 3 3 Definitions, symbols, abbreviations, and conventions 3 3.1
7、 Definitions .3 3.2 Symbols and abbreviations .11 3.3 Keywords 11 3.4 Conventions 12 3.5 Notation for Procedures and Functions .13 4 General .14 4.1 Overview .14 4.1.1 Data transfer modes .14 4.1.2 Cables, Connectors, Signals, Transceivers .14 4.1.3 Physical architecture of bus .14 4.1.4 Physical to
8、pology details and definitions 15 4.1.5 Bus loading 17 4.1.6 Termination requirements 18 4.1.7 Device Addressing .18 4.1.8 Protocol 18 5 SCSI parallel interface connectors .21 5.1 SCSI parallel interface connectors overview .21 5.2 Nonshielded connector .21 5.2.1 Nonshielded connector alternative 1
9、- A cable .21 5.2.2 Nonshielded connector alternative 2 - A cable .21 5.2.3 Nonshielded connector alternative 3 - P cable and Q cable 21 5.2.4 Nonshielded connector alternative 4 22 5.3 Shielded connector .27 5.3.1 Shielded connector alternative 1 - A cable .28 5.3.2 Shielded connector alternative 2
10、 - A cable .28 5.3.3 Shielded connector alternative 3 - P cable and Q cable 28 5.3.4 Shielded connector alternative 4 - P cable and Q cable 28 5.4 Connector contact assignments 37 5.4.1 SE assignments .38 5.4.2 Differential connector contact assignments .42 6 SCSI bus interconnect 49 6.1 SCSI bus in
11、terconnect overview .49 6.2 SCSI bus cables 49 6.3 Interconnect characteristics for signals .50 6.4 Decoupling characteristics for TERMPWR and TERMPWRQ lines 52 6.5 Connection requirements for RESERVED lines 53 6.6 Cables used with SE transceivers .53 6.6.1 SE ground offset 54 6.7 Cables used with d
12、ifferential transceivers .54 6.7.1 HVD stub length and spacing .54 6.7.2 LVD stub length and spacing .55 7 SCSI parallel interface electrical characteristics .56 7.1 SCSI parallel interface electrical characteristics overview 56 7.2 SE alternative 57 Copyright International Organization for Standard
13、ization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/02/2007 23:27:23 MDTNo reproduction or networking permitted without license from IHS -,-,- 14776-112 ISO/IEC:2002(E) SCSI Parallel Interface-2 iii 7.2.1 SE termination 57 7.2.2 SE o
14、utput characteristics .57 7.2.3 SE input characteristics 60 7.2.4 SE input and output characteristics 61 7.3 LVD alternative 62 7.3.1 LVD termination .62 7.3.2 LVD driver characteristics 66 7.3.3 LVD receiver characteristics 66 7.3.4 LVD capacitive loads 67 7.3.4.1 Management of LVD release glitches
15、 .69 7.3.5 SE/HVD transmission mode detection .69 7.3.5.1 LVD DIFFSENS driver 70 7.3.5.2 LVD DIFFSENS receiver .70 7.4 LVD/MSE multimode alternative .72 7.4.1 LVD/MSE multimode termination .72 7.4.2 LVD/MSE multimode transceiver characteristics .73 7.4.3 Power for LVD/MSE multimode transceivers .74
16、7.4.4 Ground drivers .74 7.5 HVD alternative .75 7.5.1 HVD termination .75 7.5.2 HVD output characteristics .76 7.5.3 HVD input characteristics .78 7.5.4 SE driver protection 79 7.6 Terminator power 80 8 SCSI bus signals 82 8.1 SCSI bus signals overview 82 8.2 Signal descriptions 83 8.3 Parity check
17、ing rules .84 8.4 Signal states 84 8.4.1 SE 84 8.4.2 Differential 85 8.5 OR-tied signals 86 8.6 Signal sources .86 9 SCSI parallel bus timing .88 9.1 SCSI parallel bus timing values 88 9.2 Timing description .89 9.2.1 Arbitration delay .89 9.2.2 Bus clear delay .90 9.2.3 Bus free delay 90 9.2.4 Bus
18、set delay 90 9.2.5 Bus settle delay 90 9.2.6 Cable skew .90 9.2.7 Data release delay .90 9.2.8 Disconnection delay .90 9.2.9 Power on to selection .90 9.2.10 Receive assertion period 90 9.2.11 Receive hold time .91 9.2.12 Receive negation period 91 9.2.13 Receive setup time .91 9.2.14 Receive period
19、 tolerance .91 9.2.15 Reset hold time 91 9.2.16 Reset to Selection 91 9.2.17 Selection abort time .91 9.2.18 Selection time-out delay .91 9.2.19 Signal Timing Skew 91 9.2.20 System deskew delay 91 9.2.21 Transmit assertion period .92 9.2.22 Transmit hold time 92 9.2.23 Transmit negation period .92 C
20、opyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/02/2007 23:27:23 MDTNo reproduction or networking permitted without license from IHS -,-,- 14776-112 ISO/IEC:2002(E) iv SCSI Parallel
21、 Interface-2 9.2.24 Transmit setup time 92 9.2.25 Transmit period tolerance 92 9.3 Measurement points 92 9.3.1 SE fast-10 data transfer rates 92 9.3.2 SE fast-20 data transfer rates 93 9.3.3 LVD 94 9.3.4 HVD 95 9.4 Setup and hold timings 96 9.4.1 Fast-10 data transfer rates .96 9.4.2 Fast-20 data tr
22、ansfer rates .98 9.4.3 Fast-40 data transfer rates .100 10 Removal and insertion of SCSI devices .102 10.1 Removal and insertion of SCSI devices overview .102 10.2 Case 1 - Power-off during removal or insertion .102 10.3 Case 2 - RST signal asserted continuously during removal or insertion .102 10.4
23、 Case 3 - Current I/O processes not allowed during insertion or removal 102 10.5 Case 4 - Current I/O process allowed during insertion or removal .103 11 Logical characteristics 104 11.1 SCSI bus phases 104 11.1.1 SCSI bus phase overview 104 11.1.2 BUS FREE phase 104 11.1.3 Unexpected bus free 104 1
24、1.1.4 ARBITRATION phase 105 11.1.5 SELECTION phase 105 11.1.6 SELECTION time-out procedure 106 11.1.7 RESELECTION phase .106 11.1.7.1 RESELECTION phase overview .106 11.1.7.2 RESELECTION .106 11.1.7.3 RESELECTION time-out procedure 107 11.1.8 Information transfer phases .107 11.1.8.1 Information tra
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- ISO 14776 112 2002
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